Protein - dietary protein and weight loss

Question 1

What type of weight is lost during energy deficit (study)?

Answer 1

When comparing a ‘protein group’ to a ‘CHO group’, both groups lost weight, but loss in the protein group was partitioned to a significantly higher loss of fat/lean compared with the CHO Group.

Question 2

What effect does an energy deficit have on FSR?

Answer 2

Energy deficit has a blunted response on FSR compared to energy balance.

Question 3

How do we overcome the blunting of MPS during energy restriction?

Answer 3

By consuming high amounts (30g) of protein alongside resistance exercise - can restore rates of PS

Question 4

How does high dietary protein promote high quality weight loss during energy deficit?

Answer 4

When comparing 2 groups in an Energy Deficit - 2.3 g.kg-1 or 35% energy from protein was superior to 1.0 g.kg-1 or 15% energy from protein for maintenance of lean body mass during short-term
hypoenergetic weight loss.

Change in fat mass was the same

Question 5

What are the 2 main key factors which may help lean mass preservation/gain during energy restriction?

Answer 5

• Exercise (resistance) training
• High protein diet (1.2-2.3 g/kg/d)

Question 6

What are the 4 peripheral key factors which may help lean mass preservation/gain during energy restriction?

Answer 6

• slow rate of weight loss
• early post-exercise protein intake (leucine-rich, rapidly digested source)
• high dairy protein consumption (3-7 serves dairy/d)
• balanced distribution of protein intake (young - 20-25g protein/meal; old - 35-40g protein/meal)